A new type of double universal joint fatigue static torsion test tool

Abstract

The utility model discloses a novel duplex universal joint fatigue static torsion test frock, including connecting disc and spline cover, the connecting disc one end surface is provided with end surface tooth, and one end center is provided with connecting hole, the spline cover center is provided with spline hole, the spline cover is inserted in the connecting hole and the spline cover outer surface is cooperated with the connecting hole inner surface and can transmit the torque. The utility model discloses a connecting disc and spline cover split type design, and the test machine connecting disc is connected with the connecting disc and is the end surface tooth of fixed size, and the connecting disc is connected with the spline cover and is the size and shape of fixed, needs the duplex universal joint of different diameter and size, only needs the spline cover with different specifications spline hole to replace to process, and the spline cover appearance is fixed shape, and only processing spline hole is relatively simple, and only replaces the spline cover and saves the material relatively.

Description

Technical Field

[0001] This utility model belongs to the technical field of double universal joint testing fixtures, and particularly relates to a novel double universal joint fatigue static torsion testing fixture. Background Technology

[0002] The existing fatigue static torsion test connecting plate fixture has an internal spline at one end connected to the external spline of the half shaft of the double universal joint, and an end face tooth at the other end connected to the end face tooth on the surface of the fatigue static torsion test machine body, and is fastened with screws.

[0003] Because the tooling design uses an integrated connecting plate design, and the half-shaft diameter and spline size at the half-shaft end are different for different models of double universal joints, each different product needs to have a corresponding connecting plate to meet the test requirements. However, the end face teeth are complex to machine, and the tooling for each different product needs to have internal splines machined on one end and end face teeth machined on the other end, which is complex to machine or has high procurement costs. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a new type of double universal joint fatigue static torsion test fixture.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A novel fatigue static torsion testing fixture for double universal joints includes a connecting plate and a spline sleeve. One end of the connecting plate has end face teeth, and the center of the other end has a connecting hole. The center of the spline sleeve has a spline hole. The spline sleeve is inserted into the connecting hole, and the outer surface of the spline sleeve mates with the inner surface of the connecting hole to transmit torque.

[0007] Preferably, the spline sleeve is hexagonal prism in shape, and the connecting hole is a hexagonal hole that matches the size of the hexagonal prism.

[0008] Preferably, a threaded hole is provided on the side wall of the connecting plate, and a set screw is connected in the threaded hole, with the end of the set screw abutting against the surface of the hexagonal prism.

[0009] Preferably, the connecting plate includes an upper plate and a lower plate, the upper plate and the lower plate are coaxial and integrally formed, the diameter of the upper plate is smaller than the diameter of the lower plate, the end face teeth are provided on the end surface of the lower plate away from the upper plate, the connecting hole is provided at the center of the end of the upper plate away from the lower plate, the threaded hole is provided through the side wall of the upper plate, and a ring of through holes is provided on the area of ​​the lower plate outside the upper plate.

[0010] The beneficial effects of this utility model are:

[0011] Compared with existing technologies, the advantages of this utility model are:

[0012] This invention features a separate design for the connecting disc and the spline sleeve. The connection between the connecting disc and the spline sleeve has a fixed-size end face tooth, and the connection between the connecting disc and the spline sleeve has a fixed size and shape. When it is necessary to adapt to double universal joints of different diameters and sizes, only spline sleeves with different specifications of spline holes need to be machined for replacement. The spline sleeve has a fixed shape, so machining only the spline holes is relatively simple, and replacing only the spline sleeve saves relatively materials. Attached Figure Description

[0013] Figure 1 This is an exploded view of the components of this utility model;

[0014] Figure 2 This is an exploded view of the components from another perspective of the present invention;

[0015] Figure 3 This is an exploded view of the components of this utility model when connected to both ends of a double universal joint.

[0016] In the diagram: 1. Connecting plate; 11. End face teeth; 12. Connecting hole; 2. Spline sleeve; 21. Spline hole; 3. Upper plate; 31. Threaded hole; 4. Lower plate; 41. Through hole. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figure 1-3 As shown, this utility model provides a technical solution: a novel fatigue static torsion test fixture for double universal joints, including a connecting plate 1 and a spline sleeve 2. One end surface of the connecting plate 1 is provided with end face teeth 11, and the center of the other end is provided with a connecting hole 12. The center of the spline sleeve 2 is provided with a spline hole 21. The spline sleeve 2 is inserted into the connecting hole 12, and the outer surface of the spline sleeve 2 and the inner surface of the connecting hole 12 are matched to transmit torque.

[0019] When using, such as Figure 3 As shown, the connecting plate of the testing machine transmits torque to the connecting plate 1 via the end face teeth 11. The connecting plate 1 transmits torque to the spline sleeve 2 via the connecting hole 12 and the outer surface of the spline sleeve 2. The spline sleeve 2 transmits torque to the double universal joint via the spline hole 21 and the spline at the end of the double universal joint, thereby realizing the fatigue static torsion test of the double universal joint.

[0020] This utility model features a split design for the connecting disc 1 and the spline sleeve 2. The connection between the connecting disc and the connecting disc 1 is a fixed-size end face tooth 11, and the connection between the connecting disc 1 and the spline sleeve 2 is a fixed size and shape. When it is necessary to adapt to double universal joints of different diameters and sizes, it is only necessary to process spline sleeves 2 with different specifications of spline holes 21 for replacement. The spline sleeve 2 has a fixed shape, and it is relatively simple to process only the spline holes 21. Moreover, it is relatively material-saving to replace only the spline sleeve 2. Therefore, this test fixture is simple to process and has low cost.

[0021] Preferably, the spline sleeve 2 is hexagonal in shape, and the connecting hole 12 is a hexagonal hole that matches the size of the hexagonal prism. The hexagonal prism and the hexagonal hole cooperate to transmit torque. Specifically, in implementation, the spline sleeve 2 can also be triangular, square, pentagonal, ... dodecagonal, etc., and the connecting hole 12 can be an N-shaped hole that matches the shape and size of the spline sleeve 2 to transmit torque; or the spline sleeve 2 can also be cylindrical, and the connecting hole 12 can be a round hole, with the torque transmitted by inserting a pin into the connecting plate 1 and the side wall of the spline sleeve 2.

[0022] Furthermore, a threaded hole 31 is provided on the side wall of the connecting plate 1, and a set screw is connected in the threaded hole 31. The end of the set screw is pressed against the surface of the hexagonal prism, so that the spline sleeve 2 is tightly connected in the connecting hole 12, avoiding the existence of a wobbling gap between the two, which would cause the fatigue static torsion test results of the double universal joint to deviate.

[0023] Specifically, the connecting plate 1 includes an upper plate 3 and a lower plate 4. The upper plate 3 and the lower plate 4 are coaxial and integrally formed. The diameter of the upper plate 3 is smaller than the diameter of the lower plate 4. The end face teeth 11 are provided on the end surface of the lower plate 4 away from the upper plate 3. The connecting hole 12 is provided at the center of the end of the upper plate 3 away from the lower plate 4. The threaded hole 31 is provided through the side wall of the upper plate 3.

[0024] Furthermore, a ring of through holes 41 is provided on the lower plate 4 in the area outside the upper plate 3. In use, it is convenient to install bolts in the through holes 41 to fix and press the connecting plate 1 to the connecting plate of the testing machine.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel fatigue static torsion testing fixture for double universal joints, characterized in that, It includes a connecting plate (1) and a spline sleeve (2). One end of the connecting plate (1) is provided with end face teeth (11) and the center of the other end is provided with a connecting hole (12). The center of the spline sleeve (2) is provided with a spline hole (21). The spline sleeve (2) is inserted into the connecting hole (12) and the outer surface of the spline sleeve (2) and the inner surface of the connecting hole (12) are engaged to transmit torque.

2. The novel double universal joint fatigue static torsion testing fixture according to claim 1, characterized in that, The spline sleeve (2) is hexagonal prism in shape, and the connecting hole (12) is a hexagonal hole that matches the size of the hexagonal prism.

3. The novel double universal joint fatigue static torsion testing fixture according to claim 2, characterized in that, The connecting plate (1) has a threaded hole (31) that passes through the side wall of the connecting plate (1). A set screw is connected inside the threaded hole (31), and the end of the set screw is pressed against the surface of the hexagonal prism.

4. A novel fatigue static torsion testing fixture for double universal joints according to claim 3, characterized in that, The connecting plate (1) includes an upper plate (3) and a lower plate (4). The upper plate (3) and the lower plate (4) are coaxial and integrally formed. The diameter of the upper plate (3) is smaller than the diameter of the lower plate (4). The end face teeth (11) are provided on the end surface of the lower plate (4) away from the upper plate (3). The connecting hole (12) is provided at the center of the end of the upper plate (3) away from the lower plate (4). The threaded hole (31) is provided through the side wall of the upper plate (3). A ring of through holes (41) is provided on the area of ​​the lower plate (4) outside the upper plate (3).

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